SF's New 12-Screen Movie Theater With Seat-Motion and Scent Effects Opens Friday at Stonestown San Francisco is getting its first new movie theater in five years, which opens at an awkward moment when not only are theater chains struggling to claw their way out of a pandemic slump but Hollywood still is holding back a lot of its higher-profile releases. The brand new, high-tech, 12-screen theater with a mouthful of a name — the Regal Stonestown Galleria ScreenX, 4DX, & RPX — opens Friday, May 21, in a space formerly occupied by Macy's at the redeveloped mall. As the Chronicle reports today, the theater is opening with